Well this will be my first mountain bike and i need advice on the bike.
Some guy has agreed to sell it to me for 250CAD... the upgrades he put on them are
RockSHox Judy's 4 inches of travel
deore shifters( when he emailed me he said hell put on LX shifters..are they the same or crappier?)
speed rear dereilleur (im not sure if its good but ive heard that the stock rear derailers are bad. is this one any better?)
giant alloy stem and handle bars
WTB headset(im not sure if its stock or an upgrade)



Questions
1. Is this a good deal?
2. Is this bike really heavy?
3. Will it last me?
4. im 5'6". its a 13" frame ... would this be too small for me?( i think it might be because i used to ride bmx before)

ive attatched pictures that the guy gave me

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Thanks in advance

Ken